An Interactive Model of a Pantograph-Catenary System

Lesser, Martin; Karlsson, Lennart; Drugge, Lars

doi:10.1080/00423119608969209

Cited by 18 publications

(16 citation statements)

References 5 publications

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“…The elastic force in the ANCF is presented in equation (8). The amount of the wire deformation is expressed in a complex formula.…”

Section: Ancf With Damping Forcementioning

confidence: 99%

“…While partial differential equations are applicable for wave propagations study, they are not suitable for multibody dynamics. The use of linear finite element formulation in modeling the overhead wire (8) does not account for the coupling effects and nonlinearities. Active control approaches via simulation have also been investigated previously (9) .…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

Abdullah

Michitsuji

Nagai

et al. 2010

JMTL

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In recent years, high speed railway vehicle technologies have been studied and investigated in order to develop their performances with the objectives of improving riding comfort, noise reduction and high efficiency from environmental perspective. One of the essential performances is current collection stability. Operating at high speed conditions, the current collection system which consists of contact wire and pantograph suffers from contact force variation. In order to reduce such variation, pantograph design should be comprised by active control thus realizing stability. Numerical analysis can be applied to model the current collection and in particular simulate the contact force variation itself. In this study, Finite Element Method and Absolute Nodal Coordinate Formulation are used to model the wire. A free vibration experiment that focuses on the tension of wire is performed to validate the numerical models. The validated result from the experiment demonstrates the accuracy of the numerical analysis in modeling the wire. The techniques are then applied to model the contact wire for the contact force investigation. The result indicated the availability of pantograph design via simulation to achieve steady contact force.

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“…The elastic force in the ANCF is presented in equation (8). The amount of the wire deformation is expressed in a complex formula.…”

Section: Ancf With Damping Forcementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

Abdullah

Michitsuji

Nagai

et al. 2010

JMTL

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“…While the partial differential equations can be used to study the wave propagations in the catenary cables, the use of this approach is not suited for implementation in computational multibody computer algorithms [12]. In the third approach, the catenary cables are modeled using a linear finite element formulation [15]. In these models, the moving contact load acting on the catenary is applied as an external force [9,15].…”

Section: Introductionmentioning

confidence: 99%

“…In the third approach, the catenary cables are modeled using a linear finite element formulation [15]. In these models, the moving contact load acting on the catenary is applied as an external force [9,15]. Such models, therefore, do not account for many of the coupling effects and nonlinearities due to the pantograph/catenary contact.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Large Deformation Analysis of the Multibody Pantograph/Catenary Systems

2005

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To accurately model the nonlinear behavior of the pantograph/catenary systems, it is necessary to take into consideration the effect of the large deformation of the catenary and its interaction with the nonlinear pantograph system dynamics. The large deformation of the catenary is modeled in this investigation using the three-dimensional finite element absolute nodal coordinate formulation. To model the interaction between the pantograph and the catenary, a sliding joint that allows for the motion of the pan-head on the catenary cable is formulated. To this end, a non-generalized arc-length parameter is introduced in order to be able to accurately predict the location of the point of contact between the pan-head and the catenary. The resulting system of differential and algebraic equations formulated in terms of reference coordinates, finite element absolute nodal coordinates, and non-generalized arc-length and contact surface parameters are solved using computational multibody system algorithms. A detailed three-dimensional multibody railroad vehicle model is developed to demonstrate the use of the formulation presented in this paper. In this model, the interaction between the wheel and the rail is considered. For future research, a method is proposed to deal with the problem of the loss of contact between the pan-head and the catenary cable.

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“…With the rapid development of numerical simulation, the finite element method is widely used in the field of catenary modeling [6][7][8][9]. Considering the contact element by penalty method, Collina et al [10] proposed an improved pantograph-catenary model, which included the finite element model of catenary with nonlinear element droppers and the lumped mass pantograph with the bending deformation of the collector heads by a modal superposition approach.…”

Section: Introductionmentioning

confidence: 99%

Prediction of dynamic characteristics of a pantograph-catenary system using the displacement compatibility

Chen¹,

Yang²,

Yang³

2017

J. vibroeng.

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Using the equation of displacement compatibility, a novel method for describing the contact between pantograph and catenary is proposed in this paper. Then an interaction catenary-pantograph system capable of describing vertical vibration is established. Taking into account the frictional characteristic between pantograph and catenary, the Coulomb model is applied. Based on the continuum mechanics, the partial differential equations of the coupling system are set up. For facilitating numerical simulation, the dynamic equations are further discretized by the Galerkin method, in which the modes of the complicated system are obtained by the finite element method. Therefore, the ordinary differential equations of the coupling system are numerically solved and the corresponding dynamic behaviors at different running speeds are analyzed in terms of waveform. Moreover, the effects of the frictional characteristic on the contact force between pantograph and catenary are discussed in detail. By comparing the results with European standard EN50318, the novel contact method is proved to be valid and accurate.

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An Interactive Model of a Pantograph-Catenary System

Cited by 18 publications

References 5 publications

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

Analysis of Contact Force Variation between Contact Wire and Pantograph Based on Multibody Dynamics

Three-Dimensional Large Deformation Analysis of the Multibody Pantograph/Catenary Systems

Prediction of dynamic characteristics of a pantograph-catenary system using the displacement compatibility

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